Best suggestions for a NA 231, would be a holley 390 or 450 cfm. the spread bore holley would be the best option, but are limited to 650cfm and higher. The edelbrock 500 would be fine as well. There is no need for a thunder series carb, your buying performance you wont need. As for the quadra toilet.... I'll leave that up to charlie .... as I hate the things.
:biggrin: A.j.
As far as a size I used to run a 630 early Q-Jet on my old NA for racing and a 730 on the street for better manors. Get the 650 at least and use a 1" hiker for better velocity.
you bet. you should see the pile i have in my back yard! it would make you cry. there probably 30 or 40 that the dog pees on.
A.j.
If you would like to take the needles, jets, and rear hangers out of them I'll be more than happy to pay you for them Aj. They've gotten scarce lately and I have a BUNCH of dirt guys that keep asking for a tune on their carbs.
As far as how much they're worth I get $400 a carb which includes you paying me to get in the track you're running so I can tune it between races. A friend of mine just got married and we're cleaning out his storage unit and have problbly 150 carbs sitting in my work room right now in pieces. He and I are going to go through them and see whats worth building and then re-selling them. I even have an old power jet off of a bus and it's a hog as far as air flow.